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How to calculate the sum of all even numbers between two given numbers in Kotlin

How to calculate the sum of all even numbers between two given numbers in Kotlin.

Here's a step-by-step tutorial on how to calculate the sum of all even numbers between two given numbers in Kotlin:

Step 1: Define the two given numbers​

  • Start by defining the two given numbers between which you want to find the sum of even numbers. Let's call them start and end.

Step 2: Initialize a variable to hold the sum​

  • Create a variable called sum and initialize it to 0. This variable will be used to store the sum of all the even numbers.

Step 3: Iterate through the range of numbers​

  • Use a for loop to iterate through all the numbers between start and end (inclusive). In Kotlin, you can achieve this using the .. operator. For example, start..end will create a range of numbers from start to end.

Step 4: Check if the number is even​

  • Inside the loop, check if the current number is even. You can do this by using the modulus operator %. If the current number divided by 2 has a remainder of 0, then it is even.

Step 5: Add the even number to the sum​

  • If the current number is even, add it to the sum variable. You can do this by using the += operator. For example, sum += number will add the value of number to the current value of sum.

Step 6: Print the final sum​

  • After the loop ends, print the final value of sum. This will give you the sum of all the even numbers between the given numbers.

Here's an example code snippet that demonstrates the above steps:

fun main() {
    val start = 1
    val end = 10
    var sum = 0

    for (number in start..end) {
        if (number % 2 == 0) {
            sum += number
        }
    }

    println("The sum of even numbers between $start and $end is: $sum")
}

Output:

The sum of even numbers between 1 and 10 is: 30

In the above example, the range of numbers is from 1 to 10. The even numbers between this range are 2, 4, 6, 8, and 10. The sum of these even numbers is 30, which is printed as the output.

You can modify the values of start and end variables in the code snippet to calculate the sum of even numbers for different ranges.

I hope this tutorial helps you understand how to calculate the sum of even numbers between two given numbers in Kotlin.